On 2024-12-12 20:25:35 +0300, Michael Tokarev wrote:
> 12.12.2024 20:03, Vincent Lefevre wrote:
> > On 2024-12-12 15:57:59 +0300, Michael Tokarev wrote:
> > > On Tue, 30 Apr 2024 16:33:14 +0200 Vincent Lefevre <vinc...@vinc17.net>
> > > wrote:
> > > > I had to do "cp /etc/resolv.conf /var/spool/postfix/etc/resolv.conf".
> > >
> > > Does it fix itself when you restart postfix?
> >
> > No, it doesn't, because it seems that it is only
> > /etc/network/if-up.d/postfix that does the copy, while this script
> > is not involved when one restarts postfix.
>
> When you restart postfix (either systemctl or /etc/init.d/), the
> startup procedure execute /usr/lib/postfix/configure-instance.sh,
> which updates whole chroot thing, not just resolv.conf.
I think that I was using
postfix stop
postfix start
(possibly because this is the way it was documented a long time ago,
and perhaps still in the upstream documentation):
# postfix stop
postfix/postfix-script: stopping the Postfix mail system
# postfix start
postfix/postfix-script: warning: /var/spool/postfix/etc/resolv.conf and
/etc/resolv.conf differ
postfix/postfix-script: starting the Postfix mail system
and indeed, /var/spool/postfix/etc/resolv.conf has not been updated,
contrary to the use of "systemctl restart postfix".
But with the new postfix 3.9.1-4 version (I've just upgraded after
the above test), the problem with
postfix stop
postfix start
has apparently been solved:
# ls -l /etc/resolv.conf /var/spool/postfix/etc/resolv.conf
-rw-r--r-- 1 root root 94 2024-12-13 01:03:52 /etc/resolv.conf
-rw-r--r-- 1 root root 94 2024-12-13 01:04:03 /var/spool/postfix/etc/resolv.conf
# emacs /etc/resolv.conf
# ls -l /etc/resolv.conf /var/spool/postfix/etc/resolv.conf
-rw-r--r-- 1 root root 87 2024-12-13 01:12:48 /etc/resolv.conf
-rw-r--r-- 1 root root 94 2024-12-13 01:04:03 /var/spool/postfix/etc/resolv.conf
# postfix stop
postfix/postfix-script: stopping the Postfix mail system
# postfix start
431 blocks
postfix/postfix-script: starting the Postfix mail system
# ls -l /etc/resolv.conf /var/spool/postfix/etc/resolv.conf
-rw-r--r-- 1 root root 87 2024-12-13 01:12:48 /etc/resolv.conf
-rw-r--r-- 1 root root 87 2024-12-13 01:13:02 /var/spool/postfix/etc/resolv.conf
I suppose that this is the following in the 3.9.1-4 changelog:
* run configure-instance.sh (for chroot) from within postfix-script,
so every invocation of `postfix start' will run it, not just the
startup scripts. Add a patch to upstream postfix-script.
This is to prepare for multiple instances mostly, and for consistency
Thanks.
--
Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
